Oh, but she would. And the knife is that much closer to proving the point.
"You're not a very professional sort, if you feel the need to sneak up on someone outside of business hours. That's never been the sort of thing I feel inclined to respect in a person."
Besides, he wouldn't have seen her at work - and if he has, it had nothing to do with freelance castration. A good sniper stays hidden as well as possible, after all.